Locomotive draft chamber



Jan. 18, 1938.

G. S. BOYLER LOCOMOTIVE DRAFT CHAMBER 8 Sheets-Sheet l Filed Nov. 2, 1936 prrr Jan. 18, G, s LocoMoTlvE DRAFT CHAMBER 8 Sheets-Sheet 2 Fil'ed NOV. 2, 1936 NWN Jan.-18, 1938. e. s. BoYLl-:R

LOCOMOTIVE DRAFT CHAMBER Filed Nov. 2, 1936 8 Sheets-Sheet 3 Jan. 18, 1938. l G. s. BoYLER v LOCOMOTIVE DRAFT CHAMBER FiledNov. 2, 193e Jan. 1s, 193s. Q s, BOYLER 2,105,716

LOCOMOTIVE DRAFT CHAMBER Filed Nov. 2, 1936 8 Sheets-Sheet 5 Jan. 18, 1938. Q s, BOYLER LocoMoTlvE DRAFT CHAMBER Filed Nv. 2, 1936 8 Sheets-Sheet 6 Filed Nov. 2, 1936 8 Sheets-Sheet 7 W ,wn la. f Ww 0 J 9 J 4 Il Z Z fik/J5 w ww 9 v a0, M 4&5 y

ATTVS Jn. 1s, 193s.

G. S. BOYLER LOCOMOTIV'E DRAFT CHAMBER 8 Sheets-Sheet 8 y Fi1ed.N0v. 2, 1936 UNITED STATES arcane ATENT OFFICE LOCOMOTIVE DRAFT CHAMBER George Samuel Boyler, Peterborough, Ontario, Canada Application November 2, 1936, Serial No. 108,736

4 Claims.

My invention relates to improvements in locomotive draft chambers, and the object of the invention is to provide a construction of chamber which may be easily and quickly assembled or 5 disassembled thereby greatly economizing time,

labour and cost of repair to this part of the locomotive and yet provide a structure which is rigid, tight fitting and strong, in which mesh screen liable to clog with ne cinder particles is l dispensed with, in which there is a clear unobstructed draft passage for the smoke and by which the hot cinders are broken up into very ne particles quickly losing their heat before passing out of the smoke stack, and it consists 15 essentially in the arrangement and construction of parts all as hereinafter more particularly explained.

Fig. 1 is a longitudinal sectional view through a portion of a locomotive and my draft chamber.

gg Fig. 2 is a plan section on line 2-2 Fig. 1 showing the baie plates in full.

Fig. 3 is a similar view to Fig. 2 with the baiile plates removed.

Fig. 4 is a cross sectional view on line 4 4 g5 Fig. 1.

Fig. 5 is a View of the front baffle plates shown in perspective and separated apart.

Fig. 6 is a sectional view on line 6 6 Fig. 1 showing the intermediate baiile plates in full.

. gq' Fig. 7 is a view of the intermediate bale plates shown in perspective and separated apart.

Fig. 8 is a sectional view on line 8--8 Figs. 1 and 2.

Fig. 9 is a View of the rear baille plates shown in 35 perspective and separated apart.

Fig. 10 is a sectional View on line III-I0 Fig. l.

Fig. 11 is a sectional view on line II-I I Fig. 3.

Fig. 12 is a sectional detail on line I2-I2 Fig. 1l.

lif) Fig. 13 is a perspective view of the draft chamber with all the movable parts removed.

Fig. 14 is a perspective view of the vertical removable dead plates separated apart.

Fig. 15 is a perspective view of the horizontal -13 removable dead plates separated apart.

Fig. 16 is a perspective detail of the front transverse plate or apron.

Fig. 1'7 is a perspective detail of the rear transverse plate or apron.

Fig. 18 is an enlarged perspective detail of the petticoat pipe and the lower portion of the stack separated apart and showing the detachable connection therebetween.

Fig. 19 is a sectional plan detail of the smoke stack and its connections.

(Cl. 11G-122) In the drawings like characters of reference indicate corresponding parts in each iigure.

I indicates the body of the locomotive provided with the usual exhaust nozzle 2. 3 indicates the smoke stack beneath which the exhaust nozzle 5 2 is located in vertical axial alignment according to the usual practice. The lower end of the smoke stack is provided with an annular surrounding ilange I in which are located diametrically opposite concentric slots 5 and 6 and a 10 small orifice 1.

8 indicates a stack extension provided at its upper end with an annular ilange 9 opposing the iiange 4 and provided with hook ngers I0 and II designed to pass through the slots 5 and 6 15 when the flanges l and 9 are brought into contact and when the extension 8 is turned concentrical- 1y to engage the opposite ends of the slots to connect the parts together as indicated in Fig. 19. I2 is an orice formed in the ange 9 which, 20 by the turning of the extension 8, is brought into a line with the orifice l so that a bolt I3 may pass therethrough to positively secure the stack 3 and extension 8 together. The lower end of the extension 8 is provided with a aring portion or 25 petticoat Ill.

I5 is a stationary dead plate extending transversely of the locomotive body and forming the rear wall of the draft chamber or smoke box. The lower edge of the vertical portion of the 30 dead plate I5 extends slightly below the horizontal centre of the locomotive body and is formed with a rectangular central opening I6 extending upward from such lower edge. At each side of the opening I6 the dead plate is provided 35 with horizontal extensions I'I and I8 terminating in depending portions I9 and 29.

The portions I'I and I8 are each provided with aligned slots 2l and 22 and the extensions I9 and 29 each with a vertical slot 23 disposed in the 40 same vertical plane as the slots 2| and 22. The portions I'I, I8, I9 and 29 together with the dead plate I5 are secured to the interior of the boiler body so as to form an integral part thereof. The exhaust nozzle projects up centrally between the portions I'I and I8 and is provided with an annular flange 2X adjacent its upper end.

Integral with the dead plate I5 and the portions I'I and I8 are vertical strap portions 24 50 spaced from the dead plate to form slotted openings 25 for a purpose which will hereinafter appear. Each portion 2l! is provided with a vertical slot 26 located in the same vertical plane as the slots 2I and 22 and in longitudinal align- 55 ment with vertical slots 2l in the dead plate l5 (see Fig. il).

The upper edge of the opening it is provided with an up-turned hooked lip 28.

29 and 36 are removable vertical dead plates each provided with a laterally outwardly extending lug 3l adapted to enter the slotted openings and provided with vertical slots 32 adapted to register on one side with the slots Z and on the oppositeside with slots 2l formed in the dead plate l5,

The upper edge oi the dead plate 28 is provided with a rearwardly hooked portion il engaging the hooked lip 3 of the dead plate l5 at one side of the centre line thereof and at its lower edge with a forwardly hooked portion terminating at its inner end in a closed loop 35. The inner vertical edge of the dead plate 28 is provided witha tongue extension 3l.

The dead plate 38 is provided at its upper edge with a hooked portion 38 which is wider than the hook portion 3d to enable oi the dead plate 30 overlapping the tongue extension 3l and yet it into the up-turned lip 25 at the opposite side of the dead plate opening i8. At its lower edge the dead plate 3d is provided with a forwardly hooked portion 35X terminating at its inner end in a closed loop 36X. v

8S and il@ are horizontal dead plates resting at their outer edges on the stationary dead plate portion Il and i8 and having in their inner edges semi-circular opposing recesses di and 42 to allow the dead plates 39 and il@ to fit around the exhaust nozzle 2 and rest on the annular flange 2X thereof. Adjacent the outer edges of the dead plates 39 and @d are longitudinal slots `43 and 44 which, when the parts are assembled,

register with the slots 2l and 22.

The rear edge of each dead plate 39 and 4Q is provided with a down-turned fiange 45 itting into the portions 35 and 85X of the vertical dead plates 2Q. The nanges d5 are slotted at d5 to form hook portions 41 engaging the loops 36 and 36X as clearly indicated in Fig. l0, The forward edges of the dead plates 39 and lil are each provided with lug extensions l having upturned ends i9 provided with key holdingloops 56. From the upper face of the dead plates 39 and lili extend lugs 5l set at an angle and provided with key holding loops 52'. v

Beneath the stationary dead plate portions l? and i8 and in contact with the vertical portions i9 and Zi? extends a transverse bar having key loops 54 extending through the vertical slots 23 to protrude therefrom. The upper edge of the plate 53 is provided with a rearwardly extending lip 55 contacting with the lower faces of the dead plates 39 and 438.

Holding bars 5S extend over the slotted portions of the dead plates 39 and itl carried on the stationary dead plate portions l? and i3 and have 11p-turned rear ends di and down-turned forward ends 58 and hook portions 59 and 6l) extending through the aligned slots t3 and 2l, and lili and 22. The up-turned rear portion 51 is provided with a projection 6l extending through the aligned slots 26, 32 and 2l'. The down-turned portions 58 are provided with vertical slots G2 in alignment with the slots 23 and through which the key loops extend.

63 is an outer transverse plate having slots 5d through which the key loops 5d also extend.

Y The upper edge of the plate 53 is provided with a rearwardly extending lip 65 overlying the lipped upper edge 55 of the plate 53. When the plates 53 and B3 and bars 5E are placed in position, they are secured by the keys 66 extending through the key loops 54 as clearly shown in Figs. l and 11.

61, 68 and S9 are respectively the front, intermediate and rear baffle plates. Each of these plates are arranged in pairs, a plate being located at each side of the centre line of the draft chamber. The front baille plates El are iiat plates meeting at the centre line of the draft chamber and extending laterally to a point adjacent the inner edge of each stationary dead plate portion I1 and I8 to allow for the rearward passage of the smoke. The upper edges of these plates are curved concentric to the interior periphery of the locomotive body and t at such edges against a flange 'IU depending from the top of the locomotive and provided with key loops l! extending through slots 'I2 adjacent the upper edge of each plateV and 13 are `keys extending through the loops 7|. The lower ends of the plates are provided with slots 14 through which the loops 58 pass extending from the lug 49 to receive the keys 15X. The plates 61 are provided with parallel vanes l5 inclining downwardly from the centre line of the draft to the outer edge of the plate.

The intermediate plates 38 nt at their upper edge the interior periphery of the smoke chamber, the upper portion vof each plate extending inwardly as indicated at i6 to form a central opening 'Vl for the rearward passage of the smoke. The lower portions 'HX incline slightly rearward towards their outer edges, such portions being provided with downwardly and inwardly inclined vanes 18.

Each intermediate plate 58 is provided with upper and lower slots 19 and 80. 8l are lugs extending in an inwardly and in a forwardly inclined direction across the holding bars B and from which extend key receiving loops 82 extending through the lower Yslots 88 of the plates 68 and secured therein by a key 83. 84 are lugs depending from the upper portion of the looomotive body at each side of the centre thereof and from which extend key receiving loops 85 through .the upper slots 19 being secured therein by the keys 86.

The rear baille plates 69 each comprises rearwardly inclined portions 81 which meet at the centre line of the draft chamber and extend adjacent to the securing bars 5B and a plate portion 88 extending from each portion 8l at a slightly sharper angle. The upper edge of the extension 88 is curved downwardly to form an opening for the inward passage of the smoke which then passes to the stack 3. Each plate B9 is provided with upper and lower slots 39 and 90. 9| is a broad V-shaped flange depending from the top of the locomotive body, the apex of which is located on the centre line of the body, the arms 92 of the V extending rearwardly, From each arm 92 extends a key receiving sleeve 93' passing through a slot 89 of a plate 69 and secured by the key 95. Each plate 69 is provided with two sets of vanes 91 and 88. The varies 8l incline downwardly from the inner edge of the plate portion 81 towards the opposite edge of such portion and vanes S8 extending from the extension 88 extending rearwardly in an upwardly inclined direction.

The key receiving sleeves 52 previously described extend through the lower slots and are secured therein by the keys 96.

If desired a form of self-locking key may be used as indicated in Fig. 12in which the key 66 is provided with a spring tongue lix'which is convexed outwardly so that when the key is driven the tongue 66X is compressed inwardly to permit the key passing to its locking position as indicated in Fig. l2.

In operation smoke passes forward beneath the plates 53 and 63 then upward against the front faces of the plates 6l. The smoke and any live cinders carried in the smoke impinge on the vanes l5 and are directed laterally outward to pass around the outer upwardly extending edges of the plates Sl' to impinge on the vanes 18 of the plates G8 being directed inwardly by such vanes to pass through the central openings il to be carried against the vanes Si and $8 as the smoke passes around the front face of the plate 69 to pass over the curved edges 88 to the stack 3.

As the live cinders in the smoke impinge successively against the vanes l5, '18, 91 and 98, the cinders are broken up into ne particles which rapidly lose their heat and become dead as they pass out of the smoke stack.

Although I have shown the vanes 15, 18, 91 and 98 extending only from the front face of the plates @1, 63 and 69 similar vanes, if found desirable, may be placed on the rear faces of these plates.

In disassembling my device, the; keys 66 are first removed permitting the removal of the plates t3 and 53. The keys 'i3 and 75X are then withdrawn permitting the removal of the front plates El. Similarly by the withdrawal of the keys 83 and S6 the intermediate plate 6B may be removed and by the withdrawal of the keys S5 and 96 the rear plate E9 may be removed.

After the baffle plates 6l, 68 and 69 are removed the bolt I3 is withdrawn and the stack extension turned to disengage the hooks I and l I from the slots and When the stack extension B is removed, the bars 56 are withdrawn allowing the horizontal dead plates 39 and 4E to be lifted and removed, the hooks @l thereof being disengaged laterally.

The vertical dead plates 29 and 3i) may then be disengaged from the hook lip 28 and the lug portions 3i withdrawn from the slotted openings 25.

The interior of the locomotive may then be readily gotten at for repair.

What I claim as my invention is:-

1. The combination with the locomotive body and the stack, of a vertical wall located at the rear of the stack and having a rectangular central opening extending upward from its lower edge to a point intermediate of its height, horizontal wall portions extending forward from such lower edge at each side of the opening, a vertical plate extending between and overlapping the sides of such opening, a horizontal plate extending between and overlapping the horizontal wall portions, a removable bar plate overlying each overlapping vertical and horizontal plate portion means for tying each horizontal wall portion, the corresponding overlapping plate portion and overlying bar plate together, and means for tying each vertical wall portion, corresponding overlapping plate portion and overlying bar plate together.

2. The combination with the locomotive body and the'stack, of a vertical wall located at the rear of the stack and having a rectangular central opening extending upward from its lower edge to a point intermediate of its height,ihorizontal wall portions extending forward from such lower edge at each side of the opening, a vertical plate extending between and overlapping the sides of such opening, a horizontal plate extending between and overlapping the horizontal wall portions, a removable bar plate overlying each overlapping vertical and horizontal plate portion, means for tying each horizontal wall portion, the corresponding overlapping plate portion and overlying bar plate together, means for tying each vertical wall portion corresponding overlapping plate portion and overlying bar plate together, and means for tying the forward ends of the bar plates together.

3, The combination with the locomotive body and the stack, of a vertical wall located at the rear of the stack and having a rectangular central opening extending upward from its lower edge to a point intermediate of its height, horizontal wall portions extending forward from such lower edge at each side of the opening, a vertical plate extending between and overlapping the sides of such opening, a horizontal plate extending between and overlapping the horizontal wall portions a removable bar plate overlying each overlapping vertical and horizontal plate portion, means for tying each horizontal wall portion, the corresponding overlapping plate portion and overlying bar plate together, means for tying each vertical wall portion, corresponding overlapping plate portion and overlying bar plate together, and means for tying the forward ends of the bar plates together, such means comprising a depending portion at the forward end of each horizontal wall portion, a depending portion at the forward end of each bar plate, an inner transverse tie plate bearing at its ends against the inner face of the depending wall portion, an outer tie plate bearing at its ends against the outer face of the depending bar plate portions, and means for securing the inner and outer transverse tie plates to the depending wall portions and the depending bar plate portions.

4l. The combination with the locomotive body and the stack, of a vertical wall located at the rear of the stack and having a rectangular central opening extending upward from its lower edge to a point intermediate of its height and having slots at each side of the opening, horizontal wall portions extending forward from such lower edge at each side of the opening, a vertical plate extending between and overlapping the sides of such opening and having slots in the overlapping portions registering with the slots of the wall, a horizontal plate extending between and overlapping the horizontal wall portions, a removable bar plate overlying each overlapping vertical and horizontal plate portion, a projection extending from the bar plate through the registering slots of the vertical wall and vertical plate, means for tying each horizontal wall portion, the corresponding overlapping plate portion and overlying bar plate together, and means for tying each vertical wall portion, corresponding overlapping plate portion and overlying bar plate together.

GEORGE SAMUEL BOYLER. 

